Item Type: 2 Phase 4 Wire Stepper Driver_x000D_ Model: SMD-2A24-M32D-AV10_x000D_ Material: ABS_x000D_ Specification: 2 Phase 4 Wire Bipolar Type_x000D_ Speed Response Rate: 100KHz_x000D_ Operating Temperature: 0-50_x000D_ Operating Humidity: 40-90%RH_x000D_ Input Voltage: DC10V-26V_x000D_ Minimum Standby Current: 0.03A_x000D_ Maximum Work Allowable Current: 15A (Motor and Brake 10A + Solenoid Valve 5A)_x000D_ Allow Start up Peaks Surge Current: 35A 0.2 Seconds_x000D_ Allowable Input Power Ripple: Less than or equal to 500MV_x000D_ The transmitting frequency of the light belt is 433MHz, the antenna is 340mm. The transmitting power is 10MW. The open distance is 100 meters._x000D_ The remote control antenna of 250mm, receiving sensitivity of -110DB, and open distance of 100 meters._x000D_ Solenoid Valve Interface Specifications: Adapt to various standard solenoid valves with 24V and operating current within 5A._x000D_ Motor and Brake Interface Specifications: Adapt to 24V electromagnetic brakes and motors, and the total working current does not exceed 10A._x000D_ _x000D_ How to Use: _x000D_ 1. Wiring method:_x000D_ GND: DC power supply ground wire_x000D_ +V: DC power supply positive pole, range +9V?+36V, recommended value +24VDC_x000D_ A+, A?: A phase coil of the motor_x000D_ B+, B?: B?phase coil of the motor_x000D_ 2. Control signal interface function:_x000D_ PUL+(+5V)/PUL?(PUL): Pulse control signal: the rising edge of the pulse is valid, PUL is 4~5V at high level, and 0~0.5V at low level. In order to reliably respond to pulse signals, the pulse width should be greater than 1.2s. If +12V or +24V is used, a series resistor is required._x000D_ DIR+(+5V)/DIR?(DIR): Direction signal: high low level signal. To ensure reliable commutation of the motor, the direction signal should be established at least 5s before the pulse signal. The initial running direction of the motor is related to the wiring of the motor. Interchange any phase winding (such as A+, A? exchange) can change the initial running direction of the motor, 4~5V when DIR? is high level, and 0~0.5V when low level._x000D_ ENA+(+5V) ENA?(ENA): Enable signal: This input signal is used to enable or disable. When ENA+ is connected to +5V and ENA? is connected to low level (or the internal optocoupler is turned on), the driver will cut off the current of each phase of the motor to make the motor in a free state, and the step pulse will not be responded at this time. When this function is not needed, the enable signal terminal can be left floating.